Clarification on GXL LSD
08-04-13, 02:49 PM
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Clarification on GXL LSD
Ok. So I have been lurking around for a while and have searched a ton, but have not come up with much solid information. I was wondering what the approxomite power/torque limit is on an 87 GXL LSD rear end? Also is the Turbo II the cheapest and most effective replacement? Or is there an easier way to beef up the rear of the FC?. Any info will be helpful thanks!
08-05-13, 07:16 PM
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Be sure to read the rules. Bumps are not allowed.
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I am not aware of the torque rating, but it seems to hold up pretty well in 200-230 hp rotary engines for regular street driving, autocrossing, and endurance racing. However, if the car is used for drag racing or other types of standing starts, then an upgrade may be in order, especially if the car is running on racing slicks.
Turbo II is probably the cheapest replacement, although it can be expensive to rebuild the S4 clutch-type LSD. The most effective replacement depends on the type of racing that the car will experience. Besides live axles, other popular replacements include those from Kaaz, Cusco, and Quaife.
RX7Club.com - Announcements in Forum : New Member RX-7 Technical
Turbo II is probably the cheapest replacement, although it can be expensive to rebuild the S4 clutch-type LSD. The most effective replacement depends on the type of racing that the car will experience. Besides live axles, other popular replacements include those from Kaaz, Cusco, and Quaife.
08-06-13, 07:39 AM
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Be sure to read the rules. Bumps are not allowed.
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I am not aware of the torque rating, but it seems to hold up pretty well in 200-230 hp rotary engines for regular street driving, autocrossing, and endurance racing. However, if the car is used for drag racing or other types of standing starts, then an upgrade may be in order, especially if the car is running on racing slicks.
Turbo II is probably the cheapest replacement, although it can be expensive to rebuild the S4 clutch-type LSD. The most effective replacement depends on the type of racing that the car will experience. Besides live axles, other popular replacements include those from Kaaz, Cusco, and Quaife.
RX7Club.com - Announcements in Forum : New Member RX-7 Technical
I am not aware of the torque rating, but it seems to hold up pretty well in 200-230 hp rotary engines for regular street driving, autocrossing, and endurance racing. However, if the car is used for drag racing or other types of standing starts, then an upgrade may be in order, especially if the car is running on racing slicks.
Turbo II is probably the cheapest replacement, although it can be expensive to rebuild the S4 clutch-type LSD. The most effective replacement depends on the type of racing that the car will experience. Besides live axles, other popular replacements include those from Kaaz, Cusco, and Quaife.
Thanks, I guess I missed the part about no bumps, sorry.
The car is going to be used for drifting so independent rear is a must have for me. I don't really like live axles. And so your saying that the main weak point on this rear end is the diff itself? Should I not worry about the axles? If the axles will hold good power with a proper diff then I will be buying a Cusco or a Tomie 2 way within the week. Oh and if it helps I'm going to either be using an N/A SR20DE, Or a KA24DE I'm not looking for mad power, just reliability, availability and cheapness of replacement parts. (Don't want a boosted motor until I have much more seat time, please don't try to talk me out of my swap)
08-07-13, 09:33 PM
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If you plan on eventually increasing the torque, then you may want to just start off with a Turbo II differential and axles, and buy a 2-way aftermarket LSD unit for it. If you start with the NA LSD, then you would need to sell it off if you later upgrade to the larger Turbo II LSD. Also, the driveshaft flange is a different size, so if you originally build the car for the NA LSD you would need a new driveshaft to fit the Turbo II LSD. I guess it depends on how long you plan to drive with the lower-torque engine configuration.
The Turbo II LSD uses bigger axles than the NA LSD. Also, if you are going to use an RX-7 transmission, the Turbo II transmission is much stronger, plus it has a removable bell housing if that makes a difference in your swap.
I don't drift, but I would think that there wouldn't be all that much torque on the drivetrain because the wheels are spinning, acting like a clutch. However, I recommend that once you get enough posts, ask about this subject in our drifting forum where you will hopefully get some good guidance.
https://www.rx7club.com/drifting-226/
The Turbo II LSD uses bigger axles than the NA LSD. Also, if you are going to use an RX-7 transmission, the Turbo II transmission is much stronger, plus it has a removable bell housing if that makes a difference in your swap.
I don't drift, but I would think that there wouldn't be all that much torque on the drivetrain because the wheels are spinning, acting like a clutch. However, I recommend that once you get enough posts, ask about this subject in our drifting forum where you will hopefully get some good guidance.
https://www.rx7club.com/drifting-226/
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